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What's your opinion of DampChasers when the humidity is quite low, but stable?

I've heard different opinions, one is that you must maintain humidity at ~40% under any circumstance. The other view is that it's the swings in humidity that will damage a piano, not the relative humidity if it remains consistent.

Here in Phoenix we are quite dry (duh) except in summer, but in the summer the A/C runs so frequently that the humidity inside the house remains fairly low.

I'm game to install a D-C if it would be helpful (I have a new Pleyel 130 upright, and am willing to make the investment to maintain this wonderful piano), but continue to get all sorts of mixed messages about its usefulness.

Buy a digital hygrometer. Record on a calander for a period of one year the relative humidity in the room . Look for large swings. If there are none, you are fine without a Dampp-Chaser. If you see the humidity fluctuating more than 15% above and below 42%, then you need a complete system.

Every so often I see 70 -100 year old pianos that have lived in the Western States. The inside wooden parts look almost as good as a new piano. When you look inside an old piano raised here in the Eastern part of the country, the wood is dark brown. Hmmmmmmm. Is there a pattern here?

Originally posted by Thomas cobble:Every so often I see 70 -100 year old pianos that have lived in the Western States. The inside wooden parts look almost as good as a new piano. When you look inside an old piano raised here in the Eastern part of the country, the wood is dark brown. Hmmmmmmm. Is there a pattern here?[/b]

Yes, I've noticed the same thing with cars... my old VW was in mint condition when I sold it a few years back with 250K miles... no rust, but the paint job was totally bleached out. It, too, was a desert native.

Has anyone put a damp chaser on a Grand piano then covered the underneath below the beams with plastic or someting to hold in the moisture? I have a low humidity problem and a room humidifier is not practical.

Originally posted by Thomas cobble:Buy a digital hygrometer. Record on a calander for a period of one year the relative humidity in the room . Look for large swings. If there are none, you are fine without a Dampp-Chaser. If you see the humidity fluctuating more than 15% above and below 42%, then you need a complete system.

[/b]

Hi, Thomas:

Thanks for the reply, but I'm not sure I understand... are you saying that the humidity needs to be centered on 42%, but can vary +/- 15%?

OR

The humidity can be as low as 27% or as high as 57% without harming anything, as long as there aren't fluctuations at these levels?

If my indoor humidity is a stable 27% year-round, then I probably don't need a DampChaser? (Actually my guess is the humidity may be closer to 18-20%).

Thanks again, I apologize for my relative density (which has been known to fluctuate a good 15-20 IQ points depending on time of day).

Yes I mean to look for swings in humidity 5% is OK kinda, 10 % is IFFY at best15% means Trouble I recommend the dampp chaser system. Get a qualified Tech to install it and if you see no improvment in a year then get another piano, or another Tech

Thanks for the reply! I think the idea of measuring is a great one. I'll do it through this summer (that's our worst season) and see how much fluctuation I really get. If it moves much then it's DamppChaser time for me!

I purchased a 1962 Sohmer & Company (New York) Baby Grand to keep in my home on Long Island, New York. I wanted to do whatever I could to keep it looking as good as it did after 40 years. It looked new inside (action was pristine, as were the pinboard and bridges, and trap work) and had only minor mars on the casement. I decided to go for the DamppChaser, and am glad I did. I don't have to think about it anymore. My house tends to be dry most of the year, as evidenced by the fact that I am watering my piano about once every 2 -3 weeks. Its in a good spot (not in sunlight and away from the front window), but still need watering. It has become a joke around here, that the piano needs watering (like one of the many plants that we have). If you are not tight for the money, I'd go for it.Stu